import requests
from candypen import concurrent

# Define a source list for task function to parse.
def get_source():
    """Return a url list."""
    return ['http://www.baidu.com' for i in range(500)]

# Define the task function and add a thread_func decorator
# The thread_func decorator needs a source list, and other options (num_workers, has_result ...) as arguments
@concurrent.thread_func(source=get_source(), num_workers=100, has_result=True)
def my_task(task_source):
    """A customized task function.
    Process the task_source and return the processed results.

    Arguments
    :param task_source: the elem in the source list, which is a url here.
    :rtype: (int) A http status code.
    """
    url = task_source
    res = requests.get(url, timeout=5)
    return res.status_code

# Execute the task function.
results = my_task()
print(results)